5 -49
5-13. General maintenance (When required)
(1) Air-bleeding from Fuel system
The air in the fuel system may cause weak injection and the failure of engine start or stop. To
prevent such failure, bleed the air from fuel system.
▶ When replacing fuel filter only, air-bleeding from fuel injection pipe is not
necessary.
Notice
Air bleed plug
1. Fuel return line ( Injector ~ Fuel return coupler)
2. Fuel injection pipes (Common rail ~ Injector)
3. Common rail
4. Manual feed pump
5. Fuel pre-filter
6. Fuel main filter
7. Fuel return coupler
8. High pressure pump
9. Fuel pressure pipe (Pump ~ Common rail)
10. Injector
11. Relief valve
▶
HIGH PRESSURE FUEL. When the engine is running, do not loosen the fuel
injection pipes to bleed air from the fuel system.
Danger
▶
Do not adjust or modify the fuel injection system arbitrary. This will alter the
emission of exhaust fumes and engine performance.
Caution
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